104207806181 has 2 divisors, whose sum is σ = 104207806182. Its totient is φ = 104207806180.

The previous prime is 104207806159. The next prime is 104207806193. The reversal of 104207806181 is 181608702401.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 92115285025 + 12092521156 = 303505^2 + 109966^2 .

It is a cyclic number.

It is not a de Polignac number, because 104207806181 - 2²² = 104203611877 is a prime.

It is a super-2 number, since 2×104207806181² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (104207806121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52103903090 + 52103903091.

It is an arithmetic number, because the mean of its divisors is an integer number (52103903091).

Almost surely, 2^104207806181 is an apocalyptic number.

It is an amenable number.

104207806181 is a deficient number, since it is larger than the sum of its proper divisors (1).

104207806181 is an equidigital number, since it uses as much as digits as its factorization.

104207806181 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21504, while the sum is 38.

The spelling of 104207806181 in words is "one hundred four billion, two hundred seven million, eight hundred six thousand, one hundred eighty-one".